> Some use a lot more electricity than others (think companies and industries)

Okay sure, and if the utility is public, the public should get to set policies accordingly.

> Public utilities receive unfair advantages like preferential financing, tax exemptions, and government infrastructure grants in your definition of subsidies, public utilities frequently receive some form of government support

Unfair to who? Somebody who wanted to profit off the public? As a member of said public, excuse me for not being the most empathic towards people trying to make a buck off me.